I'm a 22 year old female pre-med student who rapidly gained weight in one month due to going off of a prescription medication. My doc diagnosed me with metabolic syndrome or insulin resistance and prescribed met 500mg twice daily. My fasting glucose levels average 129 so it's elevated. Metformin is supposed to regulate the insulin levels and can lead to weight loss in individuals who are not diabetic. What might the cause be if the metformin is NOT leading to weight loss?